condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.032777099999999997 0.0 0.0983313 Young Stem with Root 0.0306318 0.0 0.0918954 Mature Stem with Root 4.842112666666666 0.185358 12.94 Root 1.586578 0.174004 2.4331